请提出解决方案。当我单击下一个按钮时，它会给出运行时异常。我不知道如何解决这个问题。我尝试完全删除 java 代码并重新创建它。
代码如下。
package com.android.ewallet;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
public class Creataccount extends Activity
{
Intent i5;
Bundle b5=new Bundle();
ArrayList<String> value5=new ArrayList<String>();
public void onCreate(Bundle savedInsatnceState)
{
super.onCreate(savedInsatnceState);
setContentView(R.layout.creataccount);
Button next5=(Button)findViewById(R.id.next5);
Button plus5=(Button)findViewById(R.id.plus5);
next5.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
EditText acntheadet5=(EditText)findViewById(R.id.acntheadet5);
if((acntheadet5.getText().toString()).equals(""))
{
Intent i50=new Intent(Creataccount.this,Addentry.class);
//b5=getIntent().getExtras();
//i5.putExtras(b5);
startActivity(i50);
}
else
{
Toast.makeText(Creataccount.this, "Click on + to save your account", Toast.LENGTH_LONG).show();
}
}
});
Button back5= (Button)findViewById(R.id.back5);
back5.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
i5=new Intent(Creataccount.this,OptionList.class);
b5=getIntent().getExtras();
i5.putExtras(b5);
startActivity(i5);
}
});
plus5.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
EditText acntheadet5=(EditText)findViewById(R.id.acntheadet5);
value5.add(acntheadet5.getText().toString());
b5.putStringArrayList("key", value5);
Toast.makeText(getBaseContext(), "Data saved" , Toast.LENGTH_LONG).show();
acntheadet5.setText("");
}
});
}
}
单击下一步按钮后，它应该启动 Addentry.java，其代码如下。
package com.android.ewallet;
import java.util.ArrayList;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;
public class Addentry extends Activity
{
Intent i6;
Bundle b6=new Bundle();
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.addentry);
final Spinner accnt6=(Spinner)findViewById(R.id.accnt6);
Spinner frequencyet6=(Spinner)findViewById(R.id.frequencyet6);
final EditText selectdateet6=(EditText)findViewById(R.id.selectdateet6);
final EditText ammountet6=(EditText)findViewById(R.id.ammountet6);
Button selectdate6=(Button)findViewById(R.id.selectdate6);
Button add6=(Button)findViewById(R.id.add6);
Button createaccount6=(Button)findViewById(R.id.createaccount6);
createaccount6.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
i6=new Intent(Addentry.this,Creataccount.class);
// b6=getIntent().getExtras();
// i6.putExtras(b6);
startActivity(i6);
}
});
ArrayList<String> acchead=b6.getStringArrayList("key");
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, acchead);
accnt6.setAdapter(adapter);
String a6[]={"Monthly","Quarterly","HalfYearly","Yearly"};
ArrayAdapter<String> adapter1 = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_dropdown_item, a6);
frequencyet6.setAdapter(adapter1);
selectdate6.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
startActivityForResult((new Intent(Addentry.this,Date.class)),1);
}
});
createaccount6.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
i6=new Intent(Addentry.this,Creataccount.class);
// b6=getIntent().getExtras();
//i6.putExtras(b6);
startActivity(i6);
}
});
add6.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//b6=getIntent().getExtras();
//String s=b6.getString("LoginID");
selectdateet6.getText().toString();
accnt6.getSelectedItem();
ammountet6.getText().toString();
accnt6.getSelectedItem();
}
});
}
public void onActivityResult(int requestcode,int resultcode,Intent i)
{
if(requestcode==1)
if(resultcode==RESULT_OK)
{`enter code here`
final EditText selectdateet6=(EditText)findViewById(R.id.selectdateet6);
selectdateet6.setText(i.getData().toString());
}
}
}